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FreeType: Buffer overflow


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200705-22 / freetype
Release Date May 30, 2007
Latest Revision May 30, 2007: 01
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
media-libs/freetype < 2.3.4-r2 >= 2.3.4-r2, < 2.0 All supported architectures

Related bugreports: #179161


A vulnerability has been discovered in FreeType allowing for the execution of arbitrary code.

2.  Impact Information


FreeType is a True Type Font rendering library.


Victor Stinner discovered a heap-based buffer overflow in the function Get_VMetrics() in src/truetype/ttgload.c when processing TTF files with a negative n_points attribute.


A remote attacker could entice a user to open a specially crafted TTF file, possibly resulting in the execution of arbitrary code with the privileges of the user running FreeType.

3.  Resolution Information


There is no known workaround at this time.


All FreeType users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/freetype-2.3.4-r2"

4.  References


Page updated May 30, 2007

Summary: This is a Gentoo Linux Security Advisory

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